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char类型移动跨平台踩过的坑 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备
char强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问...
char类型移动跨平台踩过的坑 - C/C++ - 清泛网 - 专注C/C++及内核技术
...符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备
char强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问...
App Inventor 2 低功耗蓝牙 BlueToothLE 拓展之:RequestMTU是否有上限? -...
RequestMTU
没反应,是不是因为这个值1024太大了
1024没触发,64触发了
MTU设64不报错,设100报错 128报错.256不报错.
----
连上后,调用,没有触发回调?
待调查研究这个函数是否有上限。
为什么会提示AppInventor2.exe 不是有效的 Win32 - App Inventor 2 离线版 ...
本帖最后由 lmn2005 于 2025-04-15 18:35 编辑
电脑系统为64位win7,安装AppInventor2后运行,提示C:\AppInventor2\AppInventor2.exe 不是有效的 Win32 应用程序 这是为什么?
https://aka.ms/vs/16/release/vc_redist.x64.exe
装一个运行环境试试,如果还...
Run an OLS regression with Pandas Data Frame
...ept 14.952480
B 0.401182
C 0.000352
dtype: float64
>>> print(result.summary())
OLS Regression Results
==============================================================================
Dep. Variable: ...
常用Linux命令详解(持续更新) - 更多技术 - 清泛网 - 专注C/C++及内核技术
...间等)(ls -l 等同于 ll 命令)
[root@KEDACOM ~]# ls -l
total 64
-rw-r--r-- 1 root root 0 Jun 29 17:50 NRU_CMU_DISK_SIZE_NOTIFY2008
-rw-r--r-- 1 root root 933 Jan 10 2002 anaconda-ks.cfg 文件
drw-r--r-- 1 root root 49431 Jan 10 2002 install 目录
-r...
Is there “0b” or something similar to represent a binary number in Javascript
...gned a number that looks like it's in binary, but is actually being parsed base 10. The parseInt function expects a string as the first arg, so it turns it into "1111" (base 10 representation), then re-parses it as if it were base 2.
– Ted Hopp
Sep 12 '12 at 21...
Can I run multiple versions of Google Chrome on the same machine? (Mac or Windows)
...tically unpacks the files and duplicates the profile from a pre-configured base directory.
By default:
The Chrome binaries are placed in subfolders of C:\Chrome\.
The User profiles are created in C:\Chrome\User Data\.
The user profiles will be duplicated from the directory as specified in the sFo...
How does this code generate the map of India?
... while (a != 0) {
a = bits[b];
b++;
while (a > 64) {
a--;
if (++c == 'Z') {
c /= 9;
putchar(c);
} else {
putchar(33 ^ (b & 0x01));
}
}
}
return 0;
}
The s...
How to convert an array of strings to an array of floats in numpy?
...port numpy as np
a = ["1.1", "2.2", "3.2"]
b = np.asarray(a, dtype=np.float64, order='C')
For Python 2*:
print a, type(a), type(a[0])
print b, type(b), type(b[0])
resulting in:
['1.1', '2.2', '3.2'] <type 'list'> <type 'str'>
[1.1 2.2 3.2] <type 'numpy.ndarray'> <type 'num...
